Answer this question truthfully
### Question: What causes Cat scratch fever?
### Response: Cat scratch disease is caused by Bartonella henselae. The disease is spread through contact with an infected cat (a bite or scratch), or contact with cat saliva on broken skin or the white of the eye. About 2 - 3 weeks after becoming infected, lymph node swelling (lymphadenopathy) occurs near the site of the scratch or bite. Occasionally, an infected lymph node may form a tunnel (fistula) through the skin and drain (leak fluid). Cat scratch disease is a common cause of chronic swollen lymph nodes in children.